42919924 has 12 divisors (see below), whose sum is σ = 75186244. Its totient is φ = 21438144.

The previous prime is 42919901. The next prime is 42919927. The reversal of 42919924 is 42991924.

It can be written as a sum of positive squares in 2 ways, for example, as 42484324 + 435600 = 6518^2 + 660^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42919927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537 + ... + 9280.

Almost surely, 2^42919924 is an apocalyptic number.

It is an amenable number.

42919924 is a deficient number, since it is larger than the sum of its proper divisors (32266320).

42919924 is a wasteful number, since it uses less digits than its factorization.

42919924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914 (or 10912 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 42919924 is about 6551.3299413173. The cubic root of 42919924 is about 350.1221995070.

The spelling of 42919924 in words is "forty-two million, nine hundred nineteen thousand, nine hundred twenty-four".